tohoku university windnauts
TRANSCRIPT
What is Windnauts?✈We make the human powered aircraft for participating in the Birdman rally at Biwa lake. ✈We compete distance from taking off to landing on the water.✈In 2015, 35 members belonged to our team.
Official name Human-powered flight club
Team name Windnauts
Founding 1993
Average production cost ¥250,000
Our records
✈We have…・5 times victory at Birdman rally.・Tourney record, 36,000m, at Birdman rally.・FAI official record.
year event Aircraft name Record
2006 30th rally 谺 ~echo~ 28,628m 1st /18 team
2008 32th rally 來(sou) 36,000m 1st /13 team(Tourney record)
2009 Record Flight Rera 20,720m FAI official record
2011 34th rally Riih 18,687m 1st /11 team
2012 35th rally 翠(sui) 14,129m 1st /11 team
2015 38th rally 鴻(kou) 35,367m 1st /11 team
Design concept✈ How to win the Birdman rally in any conditions.Theme
✈Designer…Designing high speed and short span wing.
✈Pilot…Training priority to high rotational speed.
✈Worker…Planning minutely, then attaining roll-out early.
Removing effect of external wind.Improving steering performance.
Making good escape fromcomplex wind conditions.
Being experienced many testflights,(=wind conditions) for pilot,
✈Our result of winning the Birdman rally, distance section.
×Low power then aim the farthest record.✓High speed then overcome the day’s wind condition.
Meaning of Test Flight
✈Final tuning of aircraft
Assembling Checking center of gravity
and resolving the other initial failures
Meaning of Test Flight
✈Flight training of pilot→ handling tail and flying horizontally,adjusting thrust power and keeping airspeed
Flow of tuning at Test Flight
1. Practice of the departure and taking off2. Tuning the center of gravity by observing the
appearance of steady flight3. Control of the posture of aircraft by steering
horizontal and vertical tails
Flow of tuning at Test Flight
1. Practice of the departure and taking off2. Tuning the center of gravity by observing the
appearance of steady flight3. Control of the posture of aircraft by steering
horizontal and vertical tails
Flow of tuning at Test Flight
1. Practice of the departure and taking off2. Tuning the center of gravity by observing the
appearance of steady flight3. Control of the posture of aircraft by steering
horizontal and vertical tails
Flow of tuning at Test Flight
1. Practice of the departure and taking off2. Tuning the center of gravity by observing the
appearance of steady flight3. Control of the posture of aircraft by steering
horizontal and vertical tails
Result of the competition
✈Date:July. 26, 2015 ✈Rank:1st
✈Flight distance:35,367[m]✈Flight time:110[min]
Rank Team Record[m]
1st Tohoku University 35367.022nd Nihon University 22892.363rd Osaka Institute of Technology 5368.97
Summary✈We created a HPA within a year.✈Completed aircraft was brushed up through
the test flight.✈We participated in the birdman rally, and won.
Specifications
Gross weight 90[kg]Empty weight 30[kg]
Design cruising speed 7.3[m/s]Need power 220[W]
Specification
AirfoilSpan of wing
Wing area
Aspect ratioDAE-21 4.4[deg]
DAE-21,31 4.4-3.0[deg]DAE-31 3.0-1.8[deg]
Dihedral angle 4.0[deg]
Angle of attack
DAE21 - DAE31
Main wing
31.0[m]
26.8[m2]
35.95
Airfoil Milly-Terry(Original)Rudius 1.56[m]
Rotational speed 137[rpm]Thrust power 23.0[N]
Propeller
Appearance of each sectionJig installation
Jig made by ABS resin or balsa
All parts are filed by the hand of workers
Appearance of each section
Carbon cloth impregnated with epoxy
And rapping.
Fillet increase workability
Columnar beam made by CFRP
Drawing line using pencils and ruler.Cutting follow the line using scissors.
Designing beam efficiency.Arranging each lamination parts on prepreg
Making columnar beam made by CFRP is most important work of all.So, we set to work it every member.We spend all weekend on making them.